Synonyms for Jehovah (same or very similar meaning)
WordNet sense 1 (a name for the God of the Old Testament as transliterated from the Hebrew consonants YHVH):
Jahvey, Jahweh, JHVH, Wahvey, Yahve, Yahveh, Yahwe, Yahweh, YHVH, YHWH
WordNet sense 2 (terms referring to the Judeo-Christian God):
almighty, creator, divine, godhead, lord, maker, God Almighty
From the ODE community, based on WordNet
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